Patent · US Active

Rotor having segments with rotationally offset magnetic poles

US11424668B2 · kind B2 · utility

0Cited by

1References

12Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Maximilian Pilz · Munich, DE
Benjamin Schlaepfer · Munich, DE
Juntao Zhu · Munich, DE

Key dates

Filing date	Sep 18, 2019
Grant date	Aug 23, 2022
Priority date	—
Expiry date	Nov 16, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2201/15
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A rotor of an electric machine has multiple segments arranged adjacent to one another in an axial direction, wherein each of the segments has multiple magnetic poles which are arranged coaxially with respect to an axis of rotation of the electric machine and so as to be evenly distributed in a circumferential direction of the segment. The segments are arranged in the circumferential direction such that the magnetic poles of adjacent segments which are adjacent to one or more middle segments are rotationally offset in a first angular direction in relation to the magnetic poles of the one or more middle segments. The magnetic poles of segments which adjoin the adjacent segments toward the outside are rotationally offset in a second angular direction which is opposite to the first angular direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.